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Finding the Fourth Proportional to 281,441.90, 388,389.31 and 152,380.35

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Solution

The fourth proportional to 281,441.90, 388,389.31 and 152,380.35 is: 210,284.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,441.90 : 388,389.31 = 152,380.35 : x
  2. Step 2: Convert to fraction form
    281,441.90/388,389.31 = 152,380.35/x
  3. Step 3: Cross multiply
    281,441.90x = 388,389.31 × 152,380.35
  4. Step 4: Simplify right side
    281,441.90x = 59,182,898,613.11
  5. Step 5: Solve for x
    x = 59,182,898,613.11/281,441.90
  6. Step 6: Final answer
    x = 210,284.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.